CuttingAdaptor.cpp

00001 /*********************************************************************** 00002 * * 00003 * ViTooKi * 00004 * * 00005 * title: CuttingAdaptor.cpp * 00006 * * 00007 * * 00008 * * 00009 * ITEC institute of the University of Klagenfurt (Austria) * 00010 * http://www.itec.uni-klu.ac.at * 00011 * * 00012 * * 00013 * For more information visit the ViTooKi homepage: * 00014 * http://ViTooKi.sourceforge.net * 00015 * vitooki-user@lists.sourceforge.net * 00016 * vitooki-devel@lists.sourceforge.net * 00017 * * 00018 * This file is part of ViTooKi, a free video toolkit. * 00019 * ViTooKi is free software; you can redistribute it and/or * 00020 * modify it under the terms of the GNU General Public License * 00021 * as published by the Free Software Foundation; either version 2 * 00022 * of the License, or (at your option) any later version. * 00023 * * 00024 * This program is distributed in the hope that it will be useful, * 00025 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00026 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 00027 * GNU General Public License for more details. * 00028 * * 00029 * You should have received a copy of the GNU General Public License * 00030 * along with this program; if not, write to the Free Software * 00031 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, * 00032 * MA 02111-1307, USA. * 00033 * * 00034 ***********************************************************************/ 00035 00036 /*********************************************************************** 00037 * * 00038 * REVISION HISTORY: * 00039 * * 00040 * * 00041 * * 00042 ***********************************************************************/ 00043 00044 #include "CuttingAdaptor.hpp" 00045 00046 00047 CuttingAdaptor::CuttingAdaptor(ESInfo *esi, double start, double end) { 00048 00049 es = esi; 00050 startSec = start; 00051 endSec = end; 00052 startTS = (u32)(startSec * es->getMediaTimeScale()); 00053 endTS = (u32)(endSec * es->getMediaTimeScale()); 00054 IVOPseen = false; 00055 strcpy(name,"CuttingAdaptor"); 00056 } 00057 00058 00059 CuttingAdaptor::~CuttingAdaptor() { 00060 } 00061 00062 00063 void CuttingAdaptor::initialize() { 00064 } 00065 00066 00067 /***************************************************************/ 00068 list < Frame * > CuttingAdaptor::adapt(Frame * frm) { 00069 list < Frame * >tmp; 00070 u32 thisCTS; 00071 int thisSec; 00072 00073 thisCTS = frm->getAU()->cts; 00074 thisSec = (int)floor((double)thisCTS / es->getMediaTimeScale()); 00075 dprintf_full("CuttingAdaptor::adapt frame CTS %i, VOP increment %i, playoutSec: %i\n", 00076 thisCTS, es->getVOPTimeIncrement(), thisSec ); 00077 00078 if ( (thisCTS >= startTS) && (thisCTS <= endTS) ) { //in range, so keep frame! 00079 if (!IVOPseen) {//search for first I-frame 00080 if ( ((es->isVisualStream() && (frm->getType() == Frame::I_VOP))) || 00081 es->isAudioStream() || 00082 (frm->getType() == Frame::UNKNOWN_VOP) ) 00083 IVOPseen=true; 00084 } 00085 //standard forwarding adaptor behaviour 00086 if (IVOPseen) 00087 tmp.push_front(frm); 00088 } 00089 00090 return tmp; 00091 }